1 is false, 2 is true, 3 is false, 4 is false
An exterior angle is equal to the sum of the 2 non adjacent angles. In this case
100 = x + 70 Subtract 70
x = 100 - 70
x = 30
9.56 because you don't round up when two is the next number. (The hundredths place is the second number after the decimal, where the 6 is in the original number.)
X=f
x×1+1-2+3=3234557901028292